.hetong {
    padding: 0 20px;
}

.caozuo {
    display: flex;
    justify-content: space-between;
    width: 100%;
    height: 60px;
    background-color: #fff;
}

.input {
    width: 150px
}

.btn {
    width: 80px;
    height: 30px;
    background-color: black;
    color: white;
    border-radius: 3px;
    border: none;
}

.chaxun {
    display: flex;
    justify-content: space-around;
    align-items: center;
    width: 300px;
    height: 60px;
}

.xinzeng {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100px;
    height: 60px;
}

.do {
    display: flex;
    justify-content: space-around;
}

.footer {
    width: 100%;
    height: 100px;
    text-align: center;
    line-height: 100px;
}